Unknown

Dataset Information

0

Chemically Dual-Modified Biochar for the Effective Removal of Cr(VI) in Solution.

ABSTRACT: Here, a dual-modification strategy using KMnO4 (potassium permanganate) and AlCl3·6H2O (aluminum chloride, hexahydrate) as co-modifiers to improve the Cr(VI) removal capacity of K2CO3 activated biochar is introduced. As a result, the dual-modified biochar with KMnO4 and AlCl3·6H2O has the calculated adsorption energy of -0.52 eV and -1.64 eV for HCrO4-, and -0.21 eV and -2.01 eV for Cr2O72-. The Al2O3 (aluminum oxide) and MnO (manganese oxide) embedded on the surface of dual-modified biochar bring more Cr(VI) absorption sites comparing to single-modified biochar, resulting in a maximum Cr(VI) saturated adsorption capacity of 152.86 mg g-1. The excellent removal performance is due to the synthetic effect of electrostatic attraction, reduction reaction, complexation reaction, and physical adsorption. The experimental results also indicated that the spontaneous adsorption process agreed well with the pseudo-second order and Langmuir models. This dual-modification strategy is not limited to the treatment of Cr(VI) with biochar, and may also be incorporated with the treatment of other heavy metals in aqueous environment.

SUBMITTER: Yang J 

PROVIDER: S-EPMC8747338 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Chemically Dual-Modified Biochar for the Effective Removal of Cr(VI) in Solution.

Yang Juanjuan J   Song Yu Y   Yue Yan Y   Liu Wenfei W   Che Quande Q   Chen Honglei H   Ma Hongfang H  

Polymers 20211223 1

Here, a dual-modification strategy using KMnO<sub>4</sub> (potassium permanganate) and AlCl<sub>3</sub>·6H<sub>2</sub>O (aluminum chloride, hexahydrate) as co-modifiers to improve the Cr(VI) removal capacity of K<sub>2</sub>CO<sub>3</sub> activated biochar is introduced. As a result, the dual-modified biochar with KMnO<sub>4</sub> and AlCl<sub>3</sub>·6H<sub>2</sub>O has the calculated adsorption energy of -0.52 eV and -1.64 eV for HCrO<sub>4</sub><sup>-</sup>, and -0.21 eV and -2.01 eV for Cr<s  ...[more]

Similar Datasets

Unknown Effective removal of Cr(vi) from aqueous solution by biochar supported manganese sulfide.
| S-EPMC9072298 | biostudies-literature
Unknown Removal of Cr(VI) from aqueous solution using ball mill modified biochar: multivariate modeling, optimization and experimental study.
| S-EPMC10901879 | biostudies-literature
Unknown Effective Removal of Cr(VI) from Wastewater Using Biochar Derived from Walnut Shell.
| S-EPMC8467037 | biostudies-literature
Unknown Removal Performance of KOH-Modified Biochar from Tropical Biomass on Tetracycline and Cr(VI).
| S-EPMC10254335 | biostudies-literature
Unknown Characterization, kinetic, and isotherm data for Cr (VI) removal from aqueous solution by Populus alba biochar modified by a cationic surfactant.
| S-EPMC5021800 | biostudies-literature
Unknown Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse.
| S-EPMC7722720 | biostudies-literature
Unknown Removal of Cr(vi) in wastewater by Fe-Mn oxide loaded sludge biochar.
| S-EPMC11009720 | biostudies-literature
Unknown Synthesis and characterization of magnetic biochar adsorbents for the removal of Cr(VI) and Acid orange 7 dye from aqueous solution.
| S-EPMC7417418 | biostudies-literature
Unknown Influence of Synthesis Methods on the High-Efficiency Removal of Cr(VI) from Aqueous Solution by Fe-Modified Magnetic Biochars.
| S-EPMC7726960 | biostudies-literature
Unknown Removal of Cr(VI) from Aqueous Solution by Polypyrrole/Hollow Mesoporous Silica Particles.
| S-EPMC7221785 | biostudies-literature